Geological history of the Chiricahua Mountains - Wikipedia
The hoodoos originated from a thick deposit of tuff laid down by the Turkey Creek Caldera. As the tuff cooled, it contracted and formed joints. Differential chemical and physical weathering concentrated along these joints, initiating the formation of thousands of rock columns. [2]
Formation of Turkey Creek Caldera, SE Arizona | AZGS
In the Oligocene, about 26.5 Million years ago, southern Arizona was the site of a cataclysmic volcanic eruption that formed the 12-mile-wide circular Turkey Creek Caldera. As shown in this graphic, huge clouds of volcanic ash and gas belched at supersonic speeds from ring dikes along the perimeter of the formative caldera.
Chiricahua Mountains - Wikipedia
The mountains contain Precambrian basement rocks, Paleozoic and Cretaceous sedimentary rocks around a caldera complex formed by volcanic eruptions and intrusions 35–25 million years ago. [10][11] The last major eruption, 27 million years ago, created the Turkey Creek Caldera and laid down 2,000 feet (610 m) of volcanic ash which fused into welde...
Geologic Formations - Chiricahua National Monument (U.S.
2018年12月13日 · The Turkey Creek Caldera is located just to the south of the park. A cataclysmic volcanic eruption, roughly 27 million years ago, spewed ash and molten debris at super-sonic speeds and formed the approximately 12 mile wide caldera.*
Older Caldera Complexes - U.S. National Park Service
2023年4月17日 · The hoodoos and rock spires that are the defining feature of Chiricahua National Monument’s “Wonderland of Rocks” are eroded from an ash-flow tuff erupted from the Turkey Creek Caldera about 26.5 million years ago.
2006年4月5日 · Remnants of the Turkey Creek caldera provide evidence for three successive large volcanic eruptions beginning about 26.9 million years ago that blasted more than 400 km3 (100 mi3) of magma from a buried magma chamber and covered a region of at least 3,100 km2 (1,200 mi2) with pyroclastic debris. Volcanic ash, glowing
NPS Geodiversity Atlas—Chiricahua National Monument, Arizona
2024年6月14日 · Remnants of the Turkey Creek caldera provide evidence for three successive large volcanic eruptions beginning about 26.9 million years ago that blasted more than 400 km3 (100 mi3) of magma from a buried magma chamber and covered a region of at least 3,100 km2 (1,200 mi2) with pyroclastic debris.
Chiricahua National Monument, Arizona, USA » Geology Science
2023年11月14日 · The Turkey Creek Caldera, situated in the Chiricahua Mountains, played a crucial role in the deposition of volcanic materials in the region. As volcanic ash and debris from the caldera settled, they formed layers of tuff—a type …
Field guide to volcanic and plutonic features of the Turkey Creek ...
Field guide to volcanic and plutonic features of the Turkey Creek caldera, Chiricahua Mountains, southeast Arizona, in Pallister, J.S., comp., Excursion 7A: From silicic calderas to mantle nodules: Cretaceous to Quaternary volcanism,...
Chiricahua National Monument | Wildlife, Hiking, Camping
The volcanic eruption of the nearby Turkey Creek caldera some 27 million years ago produced a deposit of ash 2,000 feet (600 metres) thick. This ash cooled and fused into a gray rock called rhyolitic tuff, thereby forming the Chiricahua Mountains.